Welsbach-mantle holder.



NVENT OR] PATENTBD DEG, 1o, w07.`

G. R. WARNER. WELSBACH MANTLE HOLDER.

APPLICATION FILED NOV. 30. 1906.

Wl TNESSES.'

sumaron, n. c.

CHARLES RICE WARNER, OF PORTLAND, OREGON.

WELSBACH-MANTLE HOLDER.

Specification of Letters Patent.

Patented Dec. 10, 1907'.

Application filed November 30. 1906. Serial No. 345.850.

To all whom t may concern:

Be it known that I, CHARLES RICE WARNER, a citizen of the United States,and a resident of Portland, in the county of Multnomah and State ofOregon, have invented a new and useful Improvement in Welsbach-MantleHolders, of which the following is a specification, reference being hadto the accompanying drawings as constituting a part thereof.

This invention relates to the erforated burner-tips of gas arc-lamps andas for its object to facilitate the cleaning of such burner-tips, tofacilitate the removal of the mantle supporter or holder for the purposeof such cleaning, or trimming, and to enable the mantle-holder to beshortened to lower the mantle, as may be desirable when the bottom ofthe mantle only has been injured or broken, and the mantle may still beused for a time by merely lowering the same somewhat and by the resultso obtained, to prolong the life of the parts and to correspondinglylessen the cost of maintenance of the lamp.

In the present arrangement of the devices concerned, the effective andrapid cleaning of the burner-tip is frequently impossible, after theburner has been used for any length of time and the same is trueconcerning the removal and shortening of the mantle-holder because theseparts of the burner-tip are eX- posed to the flame and soon becomecorroded by the products of combustion and the high temperature. lhenthis has occurred the mantle-holder has usually become stuck fast in itssocket, so that it cannot be removed, and this condition necessitatesthe throwing away of a vburner-tip and the substitution therefor of anew one, when the former -would otherwise have been continued in servicefor a considerably longer time. The inability to remove themantle-holder also greatly increases the work of cleaning theperforations in the burner-tip, making it necessary to use a prickingpoint, while if the mantle-holder could be removed a stiff brush couldbe edectively used; and, furthermore, the removal of the burner-tip andreplacing thereof by a new one is a time consuming, and frequentlyunsuccessful work, because of the burner-cap having also become corrodedand weakened in service whereas if the mantle-holder could be removedthe required work of cleaning and repair could be quickly andsuccessfully done,

Figure l is an elevation of a burner of thel type referred to, alsoshowing the mantleholder in place and my invention applied thereto Fig.2 is an enlarged sectional detail of the parts comprised within theupper portion of the preceding ligure; Fig. 3 is a plan of theburner-tip and of my shield in place, the partsbeing drawn on a scalecorresponding .with that of Fig. 2; and Figs. 4, 5, 6, @c 7 are detailsof modifications of construction.

Referring now to the reference letters: my invention is only concernedwith the perforated burner-tip and parts supported thereby. The otherparts of the burner a,

are of the usual construction; i. e. l) represents the usual taperedexpansion-tube on which is mounted, in the usual manner, a Bunsenhead-shell c, and on the latter is mounted a Bunsen cap d. On the rim ofthe head-shell c rests the perforated burner-tip e, and the-latter isheld in place as usual by the cap d, the upper end of which is made witha slight flange or crimp, as usual, for that purpose.

- The burner-tip is made with an integral socket j', in which isinserted the lower end of the mantle-holder g, from the upper end ofwhich the mantle 71, is supported. It is thus apparent that, in theformer assemblage of the parts last referred to, after the mantleholderg has been inserted in the socket f, quite a crevice would be leftuncovered in the socket in which solid particles of the products ofcombustion could collect; Iand, furthermore, experience has shown thatthe central part of the burner-tip soon becomes corroded to such.eXtentas bind the mantle-holder g in place. Consequently when it was necessaryto clean the perforations in the burner-tip, a brush could not be used,but only a pricking point.. Furthermore under the saine conditions, incase to immovably the lower partJ of the mantle had been burned 1 awayor otherwise damaged there was no way of repairing the parts except bythe removal of the cap d, and the substitution new burner-tip e, and amantle-holder g, the lower end of which is broken away sufliciently toallow the mantle to be lowered as required. These manipulations ofcourse required considerable time; and moreover the crimped edge of thecap d is also subjected to the described corroding action and becomesweak, and the same is true with respect to the burner-tip, so that ifthese parts are unnecessarily handled it is found that they are brokenand cannot be replaced, requiring the substitution of new parts whereasif they had been left alone they could have been continued in servicefor still a considerable time. To remedy the defects referred to lprovide a shield j, consisting of a circular-piece of metal or othersuitable material,

4 having a central perforation and so formed Vas to have a convexedunder side lc. rIhe central perforation of the shield is made of size tojust snugly receive the mantleholder g.

The parts are assembled as shown in Fig. 2, andit will be found that theshield is an effectual guard for the socket f against the corrosiveaction caused by the products of combustion and high temperatures, andthat the mantle-holder g can be removed at will at any time; and shouldit be desired to shorten the mantle-holder for the purpose of loweringthe mantle, this may be readily done, notwithstanding that the shieldhas become bound to the mantle-holder, for the lower end of the latteris to be broken away anyway, and the shield only costing a trie, themantle-holder may be broken away so as to readily remove the shield andthen a new shield placed in such position on the mantleholder as tolower the latter as desired. The upper surface of the shield receivesall deposits of the products of combustion, and by reason of the samebeing so formed as to have a convexed under side, providing there asmall air space, the shield constitutes an effective barrier against theheat reaching the central part of the burner-tip. The shield also servesto hold the mantle-holder g in its proper vertical position, and avoidsthe leaning of the mantle to either side.

rIhe possible modifications in the construcof a l tion of my shield y'are apparent when examining the shields j, ya, j, shown in Figs. 4, 5,and 6, and such modifications make it clear that the form of the shieldis subject to variation, and that the exact form thereof is immaterialas far as accomplishing the result in mind is concerned. l prefer thetype of shield shown in Fig. 4 with respect to the upwardly projectingrim-flange Z, formed around the central hole, which fiange provides agood hold for the mantle-holder g. rlhe flange l may be easily formed inthe operation of cutting out the central hole in the shield. But l donot confine myself to any particular form of shield.

l claim:

l. ln a burner of the type described, the combination with a perforatedburner tip provided with a depending hollow extension to form a socket,a mantle holder fitting loosely in the socket and extending upwardlytherefrom, a shield of thin light material mounted on the mantle supportabove the 1 perforated burner tip and having its central portionslightly spaced therefrom and its outer edge resting snugly on andsupported by the burner tip said shield serving to protect the centralportion of the burner tip and its socket against high temperature andcorrosion.

2. ln a burner of the type described, the combination with a perforatedburner tip provided with a depending hollow extension to form a socket,a mantle holder fitting loosely in the socket, a convex shield of thinlight material mounted on the mantle support above the perforatedburner, the outer rim of the thin convex shield resting on and supportedby the burner tip thereby providing an air space between the cen-tralpart of the burner tip and the underside of the shield, to protect thecentral part of the burner tip and its depending socket against hightemperature and corrosion.

CHARLES RICE WARNER.

Witnesses:

CEorL LONG, T. J. GEIsLER.

